From patchwork Sat May 20 17:31:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Biggers X-Patchwork-Id: 684360 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 375BAC77B7A for ; Sat, 20 May 2023 17:31:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231455AbjETRbt (ORCPT ); Sat, 20 May 2023 13:31:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59698 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229617AbjETRbs (ORCPT ); Sat, 20 May 2023 13:31:48 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0BD3FB0 for ; Sat, 20 May 2023 10:31:48 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 9C6D860A09 for ; Sat, 20 May 2023 17:31:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id ECD60C433EF for ; Sat, 20 May 2023 17:31:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1684603907; bh=KFAvUu+44FKYgASeRDY3GAaD0FCGvbMA2vTyDUhjC0k=; h=From:To:Subject:Date:From; b=vH2cz99+xqQwkHUArh9OO8Q2B/Gg1Z/PWhe67WhF1NPRV9Xbbh0BkJzRNgPI7sr91 i3fIiB8b1vB2RqqBTf9Ln1Wsx6uzrHtbrErZhe60wZGFGChs7PFXySU9nuHqoQbiWf /ImGVHI11x9hdacw2ajz1sr6SPiPpoVkCFr2SjSIrldQ8Mpmy46ghg37Xw2vXcjYJV 7Mn+uTssYrWv5tRGxeCFlI9VJh/pVS4Pk78YertlkUmF2F3buDGNs0G4bqmE4vIwoo 0weJZN2uO8gvruKfn8KTLuav5ZZL7K0rs/ZmfqEVpOJqWxe8ykISP2kJEz4jpwW/Cb 7du63nXER34xQ== From: Eric Biggers To: linux-crypto@vger.kernel.org Subject: [PATCH] crypto/Kconfig: warn about performance overhead of CRYPTO_STATS Date: Sat, 20 May 2023 10:31:05 -0700 Message-Id: <20230520173105.8562-1-ebiggers@kernel.org> X-Mailer: git-send-email 2.40.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org From: Eric Biggers Make the help text for CRYPTO_STATS explicitly mention that it reduces the performance of the crypto API. Signed-off-by: Eric Biggers Acked-by: Ard Biesheuvel --- crypto/Kconfig | 3 +++ 1 file changed, 3 insertions(+) base-commit: f573db7aa528f11820dcc811bc7791b231d22b1c diff --git a/crypto/Kconfig b/crypto/Kconfig index 42751d63cd4d9..fdf3742f1106b 100644 --- a/crypto/Kconfig +++ b/crypto/Kconfig @@ -1393,6 +1393,9 @@ config CRYPTO_STATS help Enable the gathering of crypto stats. + Enabling this option reduces the performance of the crypto API. It + should only be enabled when there is actually a use case for it. + This collects data sizes, numbers of requests, and numbers of errors processed by: - AEAD ciphers (encrypt, decrypt)